20641160

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1559}}^1$

素因数の和:1901

約数の個数: 32

約数和(自身を含む): 46612800

約数和(自身を除く): 25971640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1559, 1655, 2648, 3118, 3310, 6236, 6620, 7795, 12472, 13240, 15590, 31180, 62360, 516029, 1032058, 2064116, 2580145, 4128232, 5160290, 10320580, 20641160]

約数ペア:

[(1, 20641160), (2, 10320580), (4, 5160290), (5, 4128232), (8, 2580145), (10, 2064116), (20, 1032058), (40, 516029), (331, 62360), (662, 31180), (1324, 15590), (1559, 13240), (1655, 12472), (2648, 7795), (3118, 6620), (3310, 6236)]